<template>
  <div class="table">
    <div class="crumbs">
      <i class="el-icon-tickets"></i>
      榜单歌曲信息
    </div>
    <div class="container">
      <div class="handle-box">
        <el-button type="primary" size="mini" @click="delAll">批量删除</el-button>
        <el-input v-model="select_word" size="mini" placeholder="请输入歌曲名" class="handle-input"></el-input>
        <el-button type="primary" size="mini" @click="centerDialogVisible = true">添加歌曲</el-button>
      </div>
    </div>
    <el-table size="mini" ref="multipleTable" border style="width:100%" height="680px" :data="tableData" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="40"></el-table-column>
      <el-table-column prop="name" label="歌手-歌名" align="center"></el-table-column>
      <el-table-column label="操作" width="150" align="center">
        <template slot-scope="scope">
          <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-dialog title="添加歌曲" :visible.sync="centerDialogVisible" width="400px" center>
      <el-form :model="registerForm" ref="registerForm" label-width="80px" action="" id="tf">
        <el-form-item prop="singerName" label="歌手名字" size="mini">
          <el-input v-model="registerForm.singerName" placeholder="歌手名字"></el-input>
        </el-form-item>
        <el-form-item prop="songName" label="歌曲名字" size="mini">
          <el-input v-model="registerForm.songName" placeholder="歌曲名字"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
                <el-button size="mini" @click="centerDialogVisible = false">取消</el-button>
                <el-button size="mini" @click="getSongId">确定</el-button>
            </span>
    </el-dialog>
    <el-dialog title="删除歌曲" :visible.sync="delVisible" width="300px" center>
      <div align="center">删除不可恢复，是否确定删除？</div>
      <span slot="footer">
                <el-button size="mini" @click="delVisible = false">取消</el-button>
                <el-button size="mini" @click="deleteRow">确定</el-button>
            </span>
    </el-dialog>
  </div>
</template>

<script>
import { mixin } from '../mixins/index';
import {rankSongDetail,songOfSongId,songOfSongName,rankSongAdd,delRankSong} from '../api/index';

export default {
  mixins: [mixin],
  data(){
    return{
      centerDialogVisible: false, //添加弹窗是否显示
      delVisible: false,          //删除弹窗是否显示
      registerForm:{      //添加框
        singerName: '',     //歌手名字
        songName: ''        //歌曲名字
      },
      tableData: [],
      tempData: [],
      select_word: '',
      idx: -1,          //当前选择项
      multipleSelection: [],   //哪些项已经打勾
      rankId: ''          //榜单id
    }
  },
  watch:{
    //搜索框里面的内容发生变化的时候，搜索结果table列表的内容跟着它的内容发生变化
    select_word: function(){
      if(this.select_word == ''){
        this.tableData = this.tempData;
      }else{
        this.tableData = [];
        for(let item of this.tempData){
          if(item.name.includes(this.select_word)){
            this.tableData.push(item);
          }
        }
      }
    }
  },
  created(){
    this.rankId = this.$route.query.id;
    this.getData();
  },
  methods:{
    //查询所有歌手
    getData(){
      this.tempData = [];
      this.tableData = [];
      rankSongDetail(this.rankId).then(res => {
        for(let item of res){
          this.getSong(item.songId);
        }
      })
    },
    //根据歌曲id查询歌曲对象，放到tempData和tableData里面
    getSong(id){
      songOfSongId(id)
        .then(res => {
          this.tempData.push(res);
          this.tableData.push(res);
        })
        .catch(err => {
          console.log(err);
        });
    },
    //添加歌曲前的准备，获取到歌曲id
    getSongId(){
      let _this = this;
      var songOfName = _this.registerForm.singerName+"-"+_this.registerForm.songName;
      songOfSongName(songOfName).then(
        res => {
          _this.addSong(res[0].id)
        }
      )
    },
    //添加歌曲
    addSong(songId){
      let _this = this;
      let params = new URLSearchParams();
      params.append('songId',songId);
      params.append('rankId',this.rankId);

      rankSongAdd(params)
        .then(res => {
          if(res.code == 1){
            this.getData();
            this.notify("添加成功","success");
          }else{
            this.notify("添加失败","error");
          }
        })
        .catch(err => {
          console.log(err);
        });
      _this.centerDialogVisible = false;
    },
    //删除一条歌曲
    deleteRow(){
      delRankSong(this.idx,this.rankId)
        .then(res => {
          if(res){
            this.getData();
            this.notify("删除成功","success");
          }else{
            this.notify("删除失败","error");
          }
        })
        .catch(err => {
          console.log(err);
        });
      this.delVisible = false;
    }
  }
}
</script>

<style scoped>
.handle-box{
  margin-bottom: 20px;
}
.song-img{
  width: 100%;
  height: 80px;
  border-radius: 5px;
  margin-bottom: 5px;
  overflow: hidden;
}
.handle-input{
  width: 300px;
  display: inline-block;
}
.pagination{
  display: flex;
  justify-content: center;
}
.play {
  position: absolute;
  z-index: 100;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  top: 18px;
  left: 15px;
}

.icon {
  width: 2em;
  height: 2em;
  color: white;
  fill: currentColor;
  overflow: hidden;
}
</style>
